[Coco] DEF USR and strings?

[Allen Huffman]

Correction:

> On Oct 29, 2025, at 4:26 PM, Allen Huffman <alsplace at pobox.com> wrote:
> 
> Ah, I have something else wrong. I “ldd #42” then “jmp GIVABF” to return, and see my return value is indeed 42, but the ?TM ERROR remains.

I get back 0.  The X was set to 42 by earlier successful calls in my test.

		— A